c# 多基类

Question

我在设计 classes 时遇到了一点问题。

我想做的是：有 4 个 classes，每个都有自己的属性。实际地址和邮寄地址可以是国内地址或国际地址。联系人 class 应该有两个某种类型的属性，我可以在其中访问所有需要的属性。

我已经尝试为 national/international 和 physical/mailing 创建基础 classes，但我正在为它们都有不同的属性而苦苦挣扎。

您将如何以适当的方式为 classes 建模？在 c# 中甚至可能吗？恐怕我只需要为 4 个 classes 中的每一个在 Contact 上创建 4 个属性，然后进行 null 检查以查看对象具有哪种类型的地址。

class Program
{
    static void Main(string[] args)
    {
        Contact c = new Contact();
    }
}

public class Contact
{
    public xxx PhysicalAddress { get; set; }
    public xxx MailingAddress { get; set; }
}

public class NationalAddress
{
    public bool IsDeleted { get; set; }
    public DateTime CreationDate { get; set; }

    public Country Country { get; set; }
    public PhoneNumber Landline { get; set; }

    public string Street{ get; set; }
    public string HouseNumber{ get; set; }
    public string PostalCode{ get; set; }
    public string City{ get; set; }
}

public class InternationalAddress
{
    public bool IsDeleted { get; set; } 
    public DateTime CreationDate { get; set; }

    public Country Country { get; set; }
    public PhoneNumber Landline { get; set; }

    public string AdresRule1 { get; set; }
    public string AdresRule2 { get; set; }
    public string AdresRule3 { get; set; }
}

public class PhysicalAddress
{        
    public bool IsDeleted { get; set; }
    public DateTime CreationDate { get; set; }

    public bool IsVerified { get; set; }
    public DateTime ValidFrom { get; set; }
    public DateTime? ValidTo { get; set; }

    //Semi-detached/Terraced/Appartment/...
    public TypeOfBuilding Building{ get; set; } 
    public bool Occupied { get; set; } 
}

public class MailingAddress
{
    public bool IsDeleted { get; set; }
    public DateTime CreationDate { get; set; }

    public bool IsVerified { get; set; }
    public DateTime ValidFrom { get; set; }
    public DateTime? ValidTo { get; set; }

    public bool AllowCommercialPress { get; set; }
    public bool AllowOfficialPress { get; set; }
}

此致，

代码错误

Answer 1

第 1 部分

这次采用不同的方法 --> 我重构了您的原始属性/class有点。

AddressRule 与单独的属性

为什么 InternationalAddress 没有 Street、HouseNumber 等？我将其重构为一个列表，其中可以包含一个国家地址条目和多个国际地址条目。

验证属性

为什么物理/邮寄地址中有这些验证属性？据我所知，这些应该是最高级别的。

public class Contact
{
    public PhysicalAddress PhysicalAddress { get; set; }
    public MailingAddress MailingAddress { get; set; }
}

public class AddressRule
{
    public string Street { get; set; }
    public string HouseNumber { get; set; }
    public string PostalCode { get; set; }
    public string City { get; set; }
}

public class BaseAddress
{
    public bool IsDeleted { get; set; }
    public DateTime CreationDate { get; set; }

    public Country Country { get; set; }
    public PhoneNumber Landline { get; set; }

    public List<AddressRule> AdressRules { get; set; }

    public bool IsVerified { get; set; }
    public DateTime ValidFrom { get; set; }
    public DateTime? ValidTo { get; set; }
}

public class PhysicalAddress : BaseAddress
{        
    //Semi-detached/Terraced/Appartment/...
    public TypeOfBuilding Building { get; set; }
    public bool Occupied { get; set; }
}

public class MailingAddress : BaseAddress
{       
    public bool AllowCommercialPress { get; set; }
    public bool AllowOfficialPress { get; set; }
}

第 2 部分

如果您确实需要单独的 class 用于国际和国内，我建议在您的物理/电子邮件 class 中创建一个属性类型的 AddressBase。此 AddressBase 属性可以是国际或国内。

public class Contact
{
    public PhysicalAddress PhysicalAddress { get; set; }
    public MailingAddress MailingAddress { get; set; }
}

public class AddressBase
{
    public bool IsDeleted { get; set; }
    public DateTime CreationDate { get; set; }
    public Country Country { get; set; }
    public PhoneNumber Landline { get; set; }
}

public class NationalAddress : AddressBase
{
    public string Street { get; set; }
    public string HouseNumber { get; set; }
    public string PostalCode { get; set; }
    public string City { get; set; }
}

public class InternationalAddress : AddressBase
{
    public string AdresRule1 { get; set; }
    public string AdresRule2 { get; set; }
    public string AdresRule3 { get; set; }
}


//I'm guessing Mailing and Physical is meant to know where to ship to, hence the "Transport" prefix.
public class TransportAddressBase
{
    **public AddressBase AddressBaseInformation{ get; set; }**

    public bool IsVerified { get; set; }
    public DateTime ValidFrom { get; set; }
    public DateTime? ValidTo { get; set; }
}



public class PhysicalAddress : TransportAddressBase
{       
    //Semi-detached/Terraced/Appartment/...
    public TypeOfBuilding Building { get; set; }
    public bool Occupied { get; set; }
}

public class MailingAddress : TransportAddressBase
{       
    public bool AllowCommercialPress { get; set; }
    public bool AllowOfficialPress { get; set; }
}

c# 多基类

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c# 多基类